You'd need to compile the code into your app and call it with JNI. On Sat, Aug 22, 2009 at 11:48 PM, RaulHK <[email protected]> wrote:
> > Hello, > > I would appreciate to hear from you what would be the available > options in Android to perform a lossless jpeg rotation of a jpeg image > -> Rearranging the image data from landscape to portrait by rotation > without ever fully decoding the image. > > My problem is that my device's camera always take the images in > landscape mode and sometimes I would need to rotate the image to > portrait to be used in my application. This takes time and memory if I > need to do it in the standard way (decode the image, apply rotation > operation to the pixels and encode again). Doing it without decoding > the image would bring a significant improvement in performance. > > I have seen that in Android platform (Cupcake) jpegtran.c (which > performs this operation beautifully) is available under /external/jpeg > but this functionality is not available (a.f.a.k) on the application > framework. How can I use this function? I guess I need to use JNI to > be able to access this functionality, right? Other ways? > > Could you give me any hint on how I could do this or if there is > another easier and quicker way to do it? > > Thank you in advance for any reply. > > R. > > > > -- Dianne Hackborn Android framework engineer [email protected] Note: please don't send private questions to me, as I don't have time to provide private support, and so won't reply to such e-mails. All such questions should be posted on public forums, where I and others can see and answer them. --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~----------~----~----~----~------~----~------~--~---
